Manufacturing of dry building mixtures is now the most rapidly developing section in construction industry. The major distinct of dry aggregates from ordinary ones is speed of their preparation. They became ultimate during masonry, painting and plastering works. They are used as a pore filter and brick glue. Dry aggregates are used in the makeup for the bulk floors. Viscositing components are mineral substances, and also water soluble polymers. MultyDex® products may be used as regulators of the rheological properties of mortar mixes. Applying MultyDex® may also increase moisture retention, reduce water segregation, improve thixotropic properties and increase the processing time of dry building aggregates.